Structural changes during high-energy ball milling of iron-based amorphous alloys: Is high-energy ball milling equivalent to a thermal process?

Trudeau, Michel; Schulz, Robert; Dussault, D.; Neste, A. Van

doi:10.1103/physrevlett.64.99

Cited by 204 publications

(74 citation statements)

References 8 publications

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“…For example, Trudeau et al reported the crystallization of Fe-based metallic glasses induced by high-energy ball milling. 3 They concluded that the crystallization induced by mechanical deformation was not due to a thermal process and therefore should be treated separately from thermal stability. He et al ob-served that BM of Al-Fe-Gd metallic glasses led to the formation of Al nanocrystals embedded in an amorphous matrix.…”

Section: Introductionmentioning

confidence: 99%

Mechanically induced crystallization of an amorphous CoFeZrB alloy

Bednarčı́k

Burkel

Saksl

et al. 2006

Journal of Applied Physics

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The short-time ͑12 h͒ ball milling of the amorphous Co 56 Fe 16 Zr 8 B 20 ͑at. %͒ alloy resulted in the formation of bcc-Fe nanocrystals embedded in an amorphous matrix. X-ray diffraction ͑XRD͒ using synchrotron radiation, differential scanning calorimetry ͑DSC͒, vibrating sample magnetometery ͑VSM͒, and the Faraday magnetic balance experiments were used to characterize the materials. XRD and DSC show that the fraction of crystallized bcc-Fe gradually increases with the milling time. The VSM measurements confirm the structure observations showing that the saturation magnetization increases with the milling time as the fraction of crystallized bcc-Fe increases. After 12 h of milling, the powder sample exhibited a Curie temperature of the amorphous phase T C am , which is approximately 55 K higher compared to the as-quenched ribbon ͑T C am = 601 K͒. Thermomagnetic measurements of heat-treated ribbons suggest that such an increase in T C am is not only due to temperature rises during the milling but may also be attributed to the combination of mechanical and thermal effects connected with the nature of milling.

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Section: Introductionmentioning

confidence: 99%

Mechanically induced crystallization of an amorphous CoFeZrB alloy

Bednarčı́k

Burkel

Saksl

et al. 2006

Journal of Applied Physics

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“…Mechanical crystallisation has been proven in the past to provide an alternative route for the generation of nanocrystalline materials from amorphous precursors [9][10][11]. At the early stages of the process, the microstructure is similar to the thermally crystallised material [12].…”

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confidence: 98%

Early Stages of Mechanical Crystallization of Amorphous Fe86Zr7B6Cu1 Soft Magnetic Material: The Role of Shear Bands

Friedrich

Herr

Samwer

2002

phys. stat. sol. (a)

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“…11 Thermodynamic and kinetic models which explain these processes have been proposed. [12][13][14][15] It had been widely held that a negative heat of mixing was required in order to experience single-phase, atomic mixing ͑i.e., alloying͒ in the HEBM binary metal systems. However, recently HEBM has been reported to form metastable alloys, or more correctly supersaturated solid solutions, of combinations of elements which do not exhibit appreciable solubility in their equilibrium phase diagrams.…”

Section: Introductionmentioning

confidence: 99%

Near-neighbor mixing and bond dilation in mechanically alloyed Cu-Fe

et al. 1996

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Extended x-ray-absorption fine-structure ͑EXAFS͒ measurements were used to obtain element-specific, structural, and chemical information of the local environments around Cu and Fe atoms in high-energy ballmilled Cu x Fe 1Ϫx samples ͑xϭ0.50 and 0.70͒. Analysis of the EXAFS data shows both Fe and Cu atoms reside in face-centered-cubic sites where the first coordination sphere consists of a mixture of Fe and Cu atoms in a ratio which reflects the as-prepared stoichiometry. The measured bond distances indicate a dilation in the bonds between unlike neighbors which accounts for the lattice expansion measured by x-ray diffraction. These results indicate that metastable alloys having a positive heat of mixing can be prepared via the high-energy ballmilling process. ͓S0163-1829͑96͒10033-3͔

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Structural changes during high-energy ball milling of iron-based amorphous alloys: Is high-energy ball milling equivalent to a thermal process?

Cited by 204 publications

References 8 publications

Mechanically induced crystallization of an amorphous CoFeZrB alloy

Mechanically induced crystallization of an amorphous CoFeZrB alloy

Early Stages of Mechanical Crystallization of Amorphous Fe86Zr7B6Cu1 Soft Magnetic Material: The Role of Shear Bands

Near-neighbor mixing and bond dilation in mechanically alloyed Cu-Fe

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